GeForce GT 430 1GB vs GeForce GTX 660

Intro

Compare those specs to the GeForce GTX 660, which has GPU clock speed of 980 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 192-bit bus. It also is made up of 960 SPUs, 80 TAUs, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
GeForce GTX 660		140 Watts
	Difference: 80 Watts (133%)

Memory Bandwidth

In theory, the GeForce GTX 660 is 401% faster than the GeForce GT 430 1GB overall, due to its higher bandwidth. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 115392 (401%)

Texel Rate

The GeForce GTX 660 is much (more or less 600%) better at anisotropic filtering than the GeForce GT 430 1GB. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 67200 (600%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 660 is a better choice, by far. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 20720 (740%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.